Re: Volume vs Weight measuring question
I shoot only weighed charges of BH209. There's no requirements that any manufacturer of volume measures has to meet. In other words, there's no industry standard. This presents a significant problem to shooters in some instances. Regardless of the volume measure or manufacturer, there can be significant differences in the amount different volume measurers will throw. I've had volume measures that were just down right DANGEROUS. One I had measured 30grs light. In other words, if I were going to shoot a max load of 150grs and used that measure, it actually threw the equivalent of 180grs! I've NEVER trusted them.
There is information out there about how to properly convert any propellant to weight, and all use different ratios. I know there's one for T7 but, I can't remember it. I may have it someplace on the bench. However with Blackhorn its pretty easy, as they provide you the conversion number of .7 and it becomes mathematical and easy to convert.
I weigh my BH209 charges to 75grs. by WEIGHT, which equals 107.1grs volume. If I can find the T7 conversion, I'll post it.